New exhaust and air breather on 07 street bob

got a new vance and hines exhaust big radius and the screaming eagle air breather on my bike a couple weeks ago just got pics on the computer so i thought i would share...check my avatar until i can post the pics

I have an 07 Street Bob myself and am interested in upgrading to Stage 1as well. What are the concerns I should be thinking of? Price? I would love a bit more exhaust note, but don't want it blistering loud like I have heard some. Suggestions?
Thanks,
Hugh